[BUG] module 'pandas' has no attribute 'ewma'

[xerxes-k]

Describe the bug
A clear and concise description of what the bug is.

pd.ewma causing an error

To Reproduce
Steps to reproduce the behavior:

indicators.py
line 298

def rolling_weighted_mean(series, window=200, min_periods=None):
min_periods = window if min_periods is None else min_periods
try:
return series.ewm(span=window, min_periods=min_periods).mean()
except Exception as e: # noqa: F841
return pd.ewma(series, span=window, min_periods=min_periods)